Sperm cells travel in a viscous fluid called semen, which contains many nutrients that help keep the sperm healthy. Semen also helps to protect the sperm from the acidic environment of the vagina. Despite the crucial role of sperm cells in reproduction, they are fragile in the wrong type of environment.

Spermicide lowers the chance of pregnancy by reducing the effectiveness of sperm. Conventional spermicides are inserted into the vagina before sex. They can act as a barrier to prevent sperm from entering the cervix. Spermicides also contain chemicals that reduce the movement of sperm.

Many types of chemicals can kill sperm. For example, hand sanitizer contains ingredients such as isopropyl alcohol, glycerin, and other harsh compounds. In a similar way that hand sanitizer kills germs, it kills sperm as well. Hand sanitizer may reduce the movement of the sperm cells or kill them on contact.

Hand sanitizer is a common household chemical that’s harmful to sperm, but it’s not safe for use as a spermicide. Only use hand sanitizer on the hands, and never apply it to a penis or vagina.

Conventional spermicide can be an effective form of contraception when used properly. Reach out to your OB-GYN or local Planned Parenthood if you have questions on the many safe options for pregnancy prevention.